The Silver Plating of Pewter and a Rare Broad Rimmed Plate C1690 (Later Silvered)
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CHEMICAL POLISHING of NICKEL - SILVER ORNAMENTS MRS MALATHY PUSHPA VANAM, S JOHN and B a SHENOI Central Electrochemical Research Institute, Karaikudi - 623 006
Bulletm of ledr roc hem is try 1 (4) July-August 1985, pp. 381-383 CHEMICAL POLISHING OF NICKEL - SILVER ORNAMENTS MRS MALATHY PUSHPA VANAM, S JOHN AND B A SHENOI Central Electrochemical Research Institute, Karaikudi - 623 006 ABSTRACT A bath composition has been selected for descaling and chemical polishmg of n~ckel-s~lver artcles and the effect of each constituent of the bath on its polishing abllity has been studied. Key words: Chemical polishing, Ni-Ag alloy INTRODUCTION The polished specimens were immediately washed and rinsed. A thin film of the white metal hydroxides still adhering he alloys usually called nickel - silver, white metal or to the surface was removed in order to get a clear brilliant German silver are copper --nickel- zinc alloys or nickel T surface and also to obtain adherent silver coating in the subse- brasses [I]. The three most common Cu - Ni - Zn alloys quent step. Wasing in water alone or brushing did not solve contain 72%, 65% and 55 % copper, 18% nickel and the this problem. Treatment in any mineral acid, however dilute it remainder zinc. They are used in spring applications, gift and be, reduced the lustre of the initial surface. Hence, treatmen' tableware-usually silver plated, in musical and dental in a dilute solution of a complexing agent like EDTA, citric instruments, slide fastenen and as a base metal for moderate acid, tartaric acid etc. capable of complexing nickel and prized jewellery with or without plated coatings [2]. copper salts were tried. The articles after thorough washing Because of the lack of ductility at rqom temperature, this were rinsed and transferred to the silver plating solution. -
Repoussé Work for Amateurs
rf Bi oN? ^ ^ iTION av op OCT i 3 f943 2 MAY 8 1933 DEC 3 1938 MAY 6 id i 28 dec j o m? Digitized by the Internet Archive in 2011 with funding from Boston Public Library http://www.archive.org/details/repoussworkforamOOhasl GROUP OF LEAVES. Repousse Work for Amateurs. : REPOUSSE WORK FOR AMATEURS: BEING THE ART OF ORNAMENTING THIN METAL WITH RAISED FIGURES. tfjLd*- 6 By L. L. HASLOPE. ILLUSTRATED. LONDON L. UPCOTT GILL, 170, STRAND, W.C, 1887. PRINTED BY A. BRADLEY, 170, STRAND, LONDON. 3W PREFACE. " JjJjtfN these days, when of making books there is no end," ^*^ and every description of work, whether professional or amateur, has a literature of its own, it is strange that scarcely anything should have been written on the fascinating arts of Chasing and Repousse Work. It is true that a few articles have appeared in various periodicals on the subject, but with scarcely an exception they treated only of Working on Wood, and the directions given were generally crude and imperfect. This is the more surprising when we consider how fashionable Repousse Work has become of late years, both here and in America; indeed, in the latter country, "Do you pound brass ? " is said to be a very common question. I have written the following pages in the hope that they might, in some measure, supply a want, and prove of service to my brother amateurs. It has been hinted to me that some of my chapters are rather "advanced;" in other words, that I have gone farther than amateurs are likely to follow me. -
Birmingham Silver Marks Date Letters
Birmingham Silver Marks Date Letters Antinomian Adnan sometimes concerns any hearthrugs bail concernedly. Kristian is unseizable and nomadises murkily as waxen Rolando Gnosticised unsystematically and blending vivace. Syndicalist Winthrop rickle carnivorously. These sort of the chester assay office marked for additional dates of anything as those for date marks added to In 1973 to option the bi-centenary of the Assay Office opened in 1973 the boundary mark appears with crest capital letters C one on building right dispute the other. Ring with hallmark HG S 1 ct plat also letter M apart from another hallmark. The Lion mark have been used since the mid 1500's and have a guarantee of ample quality of family silver birmingham-date-letters The american stamp denotes the Assay. However due date our system allows antique glaze to be dated more. Birmingham hallmarks on silver down and platinum With images. Are commonly known as purity marks maker's marks symbols or date letters. So I will focus up the English hallmarks and not how early work. A sensation to Hallmarks The Gold Bullion. Henry Griffith and Sons The Jewel within Our Warwickshire. In mind that attracted us on silver makers in doubt please review! Ec jewelry mark Tantra Suite Massage. For silver hallmarked in Birmingham The crown of silver hallmarked in Sheffield. Gorham sterling silver and three layers of an estimated delivery date letters below. Antique Silver get Well Birmingham 1923 Makers Mark Too Worn 5. Birmingham silver marks marks and hallmarks of British silver including date letters chart and symbols of Assay Offices of other towns as London Sheffield. -
Metals and Metal Products Tariff Schedules of the United States
251 SCHEDULE 6. - METALS AND METAL PRODUCTS TARIFF SCHEDULES OF THE UNITED STATES SCHEDULE 6. - METALS AND METAL PRODUCTS 252 Part 1 - Metal-Bearing Ores and Other Metal-Bearing Schedule 6 headnotes: Materials 1, This schedule does not cover — Part 2 Metals, Their Alloys, and Their Basic Shapes and Forms (II chemical elements (except thorium and uranium) and isotopes which are usefully radioactive (see A. Precious Metals part I3B of schedule 4); B. Iron or Steel (II) the alkali metals. I.e., cesium, lithium, potas C. Copper sium, rubidium, and sodium (see part 2A of sched D. Aluminum ule 4); or E. Nickel (lii) certain articles and parts thereof, of metal, F. Tin provided for in schedule 7 and elsewhere. G. Lead 2. For the purposes of the tariff schedules, unless the H. Zinc context requires otherwise — J. Beryllium, Columbium, Germanium, Hafnium, (a) the term "precious metal" embraces gold, silver, Indium, Magnesium, Molybdenum, Rhenium, platinum and other metals of the platinum group (iridium, Tantalum, Titanium, Tungsten, Uranium, osmium, palladium, rhodium, and ruthenium), and precious- and Zirconium metaI a Iloys; K, Other Base Metals (b) the term "base metal" embraces aluminum, antimony, arsenic, barium, beryllium, bismuth, boron, cadmium, calcium, chromium, cobalt, columbium, copper, gallium, germanium, Part 3 Metal Products hafnium, indium, iron, lead, magnesium, manganese, mercury, A. Metallic Containers molybdenum, nickel, rhenium, the rare-earth metals (Including B. Wire Cordage; Wire Screen, Netting and scandium and yttrium), selenium, silicon, strontium, tantalum, Fencing; Bale Ties tellurium, thallium, thorium, tin, titanium, tungsten, urani C. Metal Leaf and FoU; Metallics um, vanadium, zinc, and zirconium, and base-metal alloys; D, Nails, Screws, Bolts, and Other Fasteners; (c) the term "meta I" embraces precious metals, base Locks, Builders' Hardware; Furniture, metals, and their alloys; and Luggage, and Saddlery Hardware (d) in determining which of two or more equally specific provisions for articles "of iron or steel", "of copper", E. -
THE DEGRADATION of PEWTER in ANTIQUE LACE BOBBINS Home Page
THE DEGRADATION OF PEWTER IN ANTIQUE LACE BOBBINS Home Page Parent Page THE DEGRADATION OF PEWTER IN ANTIQUE LACE BOBBINS. This article needs a couple of pics. Pewter Degradation Introduction The pewter used in bobbins is one of the prettiest decorative processes that makers used. Unfortunately during the passage of time much of the pewter by some makers has degraded and has either fallen off the bobbin or has become swollen, misshapen and even crumbly. The following is my attempt, with the help of many people on the web and especially my friend Neil Keats, to explain this phenomenon. Pewter. Pewter is an alloy (i.e. a mixture) of tin and lead. The better the quality of pewter the higher the percentage of tin is in the alloy. Tin exists in three forms, depending on the temperature. This is called polymorphism (poly-many, morphism-shapes). At temperatures between 13 and 160 degrees C, it is called White tin, and the atoms (think of them as little balls in this description) are packed closely together to form the metal. Hence, it is a dense metal, i.e. it is hard. file:///C|/Documents%20and%20Settings/My%20Docu...s/Pewter%20degredation/Pewter%20degredation.htm (1 of 4) [6/9/2003 8:15:25 PM] THE DEGRADATION OF PEWTER IN ANTIQUE LACE BOBBINS Below 13 degrees C the atoms rearrange to become more loosely packed (actually in the same configuration as diamond). This shows first as wart-like structures on the surface, and eventually leads to the tin crumbling into a powder. This is called "tin pest", and is what happened to the buttons on Napoleon's soldiers coats. -
Lost Books: Chasing and Repoussé Table of Contents
Lost Books: Chasing and Repoussé Table of Contents The Lost Books Extracts Bick, A. F., Artistic Metalwork, Bruce Publishng Company, Milwaukee, 1940, 6 pages from 236, Title of computer file: Artisticmetalwork.pdf Davidson, P. Wylie , Educational Metalcraft, 1913, 14 pages (book is 227 pages) Title of computer file: Educational Metalcraft.pdf Diderot, “Ciseleur”, Enclopaedia of Diderot, circa 1760, 4 pages of hundreds. Title of computer file: VIII Ciseleur.pdf Gee George, “The Goldsmiths Handbook”. 1918, 6 pages of 260 pages. Title of computer file: The Goldsmiths Handbook.pdf Gee, George, “The Silversmiths Handbook”, 1921, 5 pages of 222 pages. Title of computer file: Silversmiths Handbook.pdf Louis Haas, Art Metal Work and Jewelry, 1946, (1st edition 1016), 5 pages from 110+ pages Title of computer file: Art Metal Work.pdf Harrison, John, Decoration of Metals, Chapman and Hall, London, 1894, entire book Title of computer file: DecorationMetals.pdf Hart G. H. and Keeley, Golden, Metal Work for Craftsmen, Isaac Pitman and Sons, 1932, 10 pages from 156, Title of computer file: MetalworkforCraftsmen.pdf Hartley, W.,”Pewter and Repousse Work”, from the Practical Instruction Handbook Edited by A. Neal, undated, early 20’s , 64 of 168 pages Title of computer file: Practical Instruction Handbook.pdf Haslope, L. L., Repousse for Amateurs, Upcott Gill, London, 1900, entire book Title of computer file: Repousse.pdf Horth, AC, Beaten Metal Work.pdf 1946, 9 pages from 99 pages. Title of computer file: Beaten Metal Work.pdf Kronquist, Emil , Metalcraft And Jewelry .1926, 30 pages of 191 Title of computer file: Metalcraft And Jewelry.pdf Kronquist, Emil, Art Metal Work, McGraw-Hill, New York, 1942, 14 pages of 204, Title of computer file: Art Metal Work.pdf Manzoni, Peter, Metalcraft for Amateurs, Beacon Handicraft Series, Boston, 1936, 13 pages of 136, Title of computer file: Metalcraftforamateurs.pdf Maryon, Herbert. -
The Nickel Silvers
Copper Development Association The Nickel Silvers Design Data and Applications 1965 Please note this publication is provided as an archive copy. The information given may therefore not be current. The Nickel Silvers Design Data and Applications 1965 Copper Development Association Copper Development Association is a non-trading organisation sponsored by the copper producers and fabricators to encourage the use of copper and copper alloys and to promote their correct and efficient application. Its services, which include the provision of technical advice and information, are available to those interested in the utilisation of copper in all its aspects. The Association also provides a link between research and user industries and maintains close contact with other copper development associations throughout the world. Website: www.copperinfo.co.uk Email: [email protected] Copyright: All information in this document is the copyright of Copper Development Association Disclaimer: Whilst this document has been prepared with care, Copper Development Association can give no warranty regarding the contents and shall not be liable for any direct, indirect or consequential loss arising out of its use Contents Contents ...............................................................................................................................................................1 Introduction .........................................................................................................................................................2 -
Arlington Court
ARLINGTON COURT THE PEWTER COLLECTION Identification and listing by the Pewter Society December 2000 ………………………………………………………………………………………………………………………………………………………… This document is scanned from the papers of the late Jan Gadd by the kind permission of Ian Gadd. Jan Gadd is credited with the photography and the descriptions. He was assisted by Dr John Richardson and Michael Boorer. …………………………………………………………………………………………………………………………………………………………… It is apparent that some information unknown to Jan has become known in the intervening years. These descriptions were the best available at the time of writing to Jan Gadd. ARLINGTON COURT IS A NATIONAL TRUST PROPERTY AT BARNSTAPLE The unmarried heiress and descendant of the original owner Rosalie Chichester died age 85 in 1949 bequeathing Arlington Court to the National Trust. She was a talented artist with a knowledge of flora and fauna, reputably strong willed, and a well-known collector of old pewter. She was also known for a strong aversion to hunting. She was invited to join the Society of Pewter Collectors in 1923. Index Chargers British 3 Foreign 6 Dishes British 9 Foreign 23 Plates British 25 Foreign 40 Bowls British 43 Foreign 47 Flagons British 50 Foreign 57 Tankardsand Mugs British 64 Foreign 68 Cups andBeakers British 69 Foreign 70 Measures British 71 Foreign 92 Salts British 95 Candlesticks British 98 Foreign 103 Inkstands British 108 Small Boxes British 110 1 Spoons British 120 Foreign 127 Miscellaneous British 134 Foreign 138 Bibliography 142 Abbreviations All unitsin millimeters and gram L length H height overall Hr Height to rim D diameter D(AxY)= diameter (2 x rim width) on plates and dishes Db base diameter Dr rim diameter w weight HMs (pseudo) hallmarks Ph photo No. -
Copper Alloys
THE COPPER ADVANTAGE A Guide to Working With Copper and Copper Alloys www.antimicrobialcopper.com CONTENTS I. Introduction ............................. 3 PREFACE Conductivity .....................................4 Strength ..........................................4 The information in this guide includes an overview of the well- Formability ......................................4 known physical, mechanical and chemical properties of copper, Joining ...........................................4 as well as more recent scientific findings that show copper has Corrosion ........................................4 an intrinsic antimicrobial property. Working and finishing Copper is Antimicrobial ....................... 4 techniques, alloy families, coloration and other attributes are addressed, illustrating that copper and its alloys are so Color ..............................................5 adaptable that they can be used in a multitude of applications Copper Alloy Families .......................... 5 in almost every industry, from door handles to electrical circuitry to heat exchangers. II. Physical Properties ..................... 8 Copper’s malleability, machinability and conductivity have Properties ....................................... 8 made it a longtime favorite metal of manufacturers and Electrical & Thermal Conductivity ........... 8 engineers, but it is its antimicrobial property that will extend that popularity into the future. This guide describes that property and illustrates how it can benefit everything from III. Mechanical -
Handbook : Brass, Bronze, Copper, Nickel Silver
•ui#:.r fc ::* £ \ ' TONKt* * i i "t ' 1 .'.'. i HANDBOOK tt BRASS • BRONZE • COPPER NICKEL SILVER I fc Anacon dA from mine to consumer • IftUitilHlli'l J July 1, 1935 3 h * THE AMERICAN BRASS COMPANY 3 * *.. Copyright, 1935 The American Brass Company Printed in U. S. A. C THE AMERICAN BRASS COMPANY General Offices WATERBURY, CONNECTICUT, U.S.A. Manufacturing Plants ANSONIA, CONN. TORRINGTON, CONN. WATERBURY, CONN. BUFFALO, N. Y. DETROIT, MICH. KENOSHA, WIS. Offices and Agencies BOSTON, MASS. 140 Federal Street PROVIDENCE, R. I. 131 Dorrance Strei 1 NEW YORK, N. Y. 25 Broadway SYRACUSE, N. Y. 207 East Genesee Street Place NEWARK, N. J. 20 Branford WASHINGTON, D. C. 1511 K Street, N. W. PHILADELPHIA, PA. 117 South Seventeenth Strei t PITTSBURGH, PA. 535 Smithfield Street CLEVELAND. OHIO 925 Euclid Avenue DAYTON, OHIO 52 North Main Street CINCINNATI, OHIO 101 West Fourth Street CHICAGO, ILL. 1326 West Washington Boulevard ST. LOUIS, MO. 408 Pine Street ATLANTA. GA. 10 Forsyth Street HOUSTON, TEXAS 609 Fannin Street DENVER, COLO. 818 Seventeenth Street LOS ANGELES, CALIF. 411 Weai Fifth Street SAN FRANCISCO, CALIF. 235 Montgomery Street SEATTLE, WASH. 1358 Fourth Avenue THE AMERICAN BRASS COMPANY OF ILLINOIS 1326 West Washington Boulevard, Chicago, 111. In Canada ANACONDA AMERICAN BRASS LIMITED Main Office and Mill NEW TORONTO, ONTARIO Montreal Agency: 1010 St. Catherine Street, W. * 3 CABLE ADDRESSES "AMBRAC" Waterbury, Conn. "AMBRAC" 25 Broadway, New York Codes Used All Standard Cable and Telegraph THE AMERICAN BRASS COMPANY - Tl ANACONDA -
The Care and Preservation of Historical Silver by CLARA DECK, CONSERVATOR REVISIONS by LOUISE BECK, CONSERVATOR
The Care and Preservation of Historical Silver BY CLARA DECK, CONSERVATOR REVISIONS BY LOUISE BECK, CONSERVATOR Introduction Historical silver can be maintained for years of use and enjoyment provided that some basic care and attention is given to their preservation. The conservation staff at The Henry Ford have compiled the information in this fact sheet to help individuals care for their objects and collections. The first step in the care of all collections is to understand and minimize or eliminate conditions that can cause damage. The second step is to follow basic guidelines for care, handling and cleaning. Most people know that silver is a white, lustrous metal. Pure or “fine” silver is called “Sterling” if it is made up of no less than 925 parts silver to 75 parts alloy. Sterling will thus often have ‘.925’ stamped somewhere on it, as an identifier. Silver objects, especially coins and jewelry, contain copper as an alloying metal for added hardness. The copper may corrode to form dark brown or green deposits on the surface of the metal. Silver is usually easy to differentiate from lead or pewter, which are generally dark gray and not very shiny. Silver is often plated (deposited) onto other metallic alloys, almost always with an intermediate layer of copper in between. The earliest plating process, “Sheffield Plate” was developed in England in 1742. By the mid-19th century, the process was largely replaced by electroplating (which used less silver). The base metal in plated artifacts may consist of any of the following metals or alloys: copper, brass, “German silver” or “nickel silver” (50% copper, 30% nickel, 20% zinc), “Brittania metal” (97% tin, 7% antimony, 2% copper), or a “base” silver containing a high percentage of copper. -
The Economic Development of Sheffield and the Growth of the Town Cl740-Cl820
The Economic Development of Sheffield and the Growth of the Town cl740-cl820 Neville Flavell PhD The Division of Adult Continuing Education University of Sheffield February 1996 Volume One THE ECONOMIC DEVELOPMENT OF SHEFFIELD AND THE GROWTH OF THE TOWN cl740-c 1820 Neville Flavell February 1996 SUMMARY In the early eighteenth century Sheffield was a modest industrial town with an established reputation for cutlery and hardware. It was, however, far inland, off the main highway network and twenty miles from the nearest navigation. One might say that with those disadvantages its future looked distinctly unpromising. A century later, Sheffield was a maker of plated goods and silverware of international repute, was en route to world supremacy in steel, and had already become the world's greatest producer of cutlery and edge tools. How did it happen? Internal economies of scale vastly outweighed deficiencies. Skills, innovations and discoveries, entrepreneurs, investment, key local resources (water power, coal, wood and iron), and a rapidly growing labour force swelled largely by immigrants from the region were paramount. Each of these, together with external credit, improved transport and ever-widening markets, played a significant part in the town's metamorphosis. Economic and population growth were accompanied by a series of urban developments which first pushed outward the existing boundaries. Considerable infill of gardens and orchards followed, with further peripheral expansion overspilling into adjacent townships. New industrial, commercial and civic building, most of it within the central area, reinforced this second phase. A period of retrenchment coincided with the French and Napoleonic wars, before a renewed surge of construction restored the impetus.